android HttpClient 訪問https

最近寫android上的小軟體，來訪問學校新教務處。沒想到陸時，就遇到uri為https://類型的,HttpClient似乎失效了。百度了一天終於找到方法解決了。如下：

首先寫一個自訂類繼承SSLSocketFactory

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.conn.ssl.SSLSocketFactory;

public class SSLSocketFactoryEx extends SSLSocketFactory {
        
        SSLContext sslContext = SSLContext.getInstance("TLS");
        
        public SSLSocketFactoryEx(KeyStore truststore) 
                        throws NoSuchAlgorithmException, KeyManagementException,
                        KeyStoreException, UnrecoverableKeyException {
                super(truststore);
                
                TrustManager tm = new X509TrustManager() {
                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {return null;}  
    
            @Override  
            public void checkClientTrusted(
                            java.security.cert.X509Certificate[] chain, String authType)
                                            throws java.security.cert.CertificateException {}  
    
            @Override  
            public void checkServerTrusted(
                            java.security.cert.X509Certificate[] chain, String authType)
                                            throws java.security.cert.CertificateException {}
        };  
        sslContext.init(null, new TrustManager[] { tm }, null);  
    }  
    
    @Override  
    public Socket createSocket(Socket socket, String host, int port,boolean autoClose) throws IOException, UnknownHostException {  
            return sslContext.getSocketFactory().createSocket(socket, host, port,autoClose);  
    }  
    
    @Override  
    public Socket createSocket() throws IOException {  
        return sslContext.getSocketFactory().createSocket();  
    }  
}

用下面方法返回的HttpClient發送get或post請求，就能正常訪問https://類型的了，當然也能正常訪問http://類型的。

public static HttpClient getNewHttpClient() {  
        try {  
            KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());  
            trustStore.load(null, null);  
            
            SSLSocketFactory sf = new SSLSocketFactoryEx(trustStore);  
            sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);  
    
            HttpParams params = new BasicHttpParams();  
            HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);  
            HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);  
    
            SchemeRegistry registry = new SchemeRegistry();  
            registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));  
            registry.register(new Scheme("https", sf, 443));  
    
            ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);  
    
            return new DefaultHttpClient(ccm, params);  
        } catch (Exception e) {  
            return new DefaultHttpClient();  
        }  
    }  

轉自：http://www.eoeandroid.com/thread-161747-1-1.html